<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        .container {
            display: grid;
            grid-template-columns: 1fr 2fr 1fr; /* 第一列和第三列占1份，第二列占2份 */
            grid-gap: 10px; /* 行列间距 */
        }
    </style>

</head>
<body>
<div class="container">
    <div>1</div>
    <div>2</div>
    <div>3</div>
</div>
</body>
</html>
